How to adjust for future length cycles?

Marie
Hi Glow
​I am currently tracking my cycle to prevent a pregnancy.
​I am onto my 4th cycle since having my first baby a year ago. My first cycle was 42 days and unusually long (before  falling pregnant with my first baby I had a clockwork cycle of 27-27 days with a 12 days luteal phase).
​Second cycle was 36 days and third was 28 days. It looks like my cycles are now back to its usual length.
​However Glow uses average length to predict future cycles.
​It's lucky I listen my body before Glow has glow was telling me I wasn't fertile when I was indeed just about to ovulate....!
​Can I manually overwrite future cycle lengths and also luteal phase to correct this?
​Thanks